package ooday01;
//构造方法的演示
public class ConsDemo {
    public static void main(String[] args) {
        Student ww=new Student();//无参构造
        ww.sayhi();
        Student zs=new Student("李",25,"jsd2307","001");//
        zs.sayhi();
        Student ls=new Student("李",30,"jsd2307","002");
        ls.playWitch("张三");
    }
}
